Methods and apparatus for initialization vector processing

Abstract

Methods and apparatus are provided for using explicit initialization vectors in both encryption and decryption processing. In one example, a sender generates an initialization vector, identifies cryptographic keys, encrypts data using the initialization vectors and the cryptographic keys, and transmits the encrypted data in a packet along with the initialization vector. A receiver identifies cryptographic keys, extracts the initialization vector from the received packet, and decrypts the encrypted data using the cryptographic keys and the initialization vector extracted from the received packet.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority under U.S.C. 119(e) from U.S. Provisional Application No. 60 / 403,030, entitled Methods And Apparatus For Encryption And Decryption Using Explicit IV, at the time of filing on Aug. 9, 2002, by David Chin, Mark Buer, and Roger Luo, the disclosure of which is herein incorporated by reference for all purposes.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to implementing a cryptography engine. More specifically, the present invention relates to methods and apparatus for processing initialization vectors or initial values.[0004]2. Description of Related Art[0005]Conventional software and hardware designs for implementing various cryptography engines often process initialization vectors inefficiently. Initialization vectors or initial values (IVs) are used in a variety of different cryptographic algorithms and are described in Applied Cryptography, Bruce Schneier, J...

AI Technical Summary

Problems solved by technology

Conventional software and hardware designs for implementing various cryptography engines often process initialization vectors inefficiently.

However, processing of the initialization vector at the entity encrypting the data and at the entity decrypting the data is inefficient.

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